US3138861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butt edge joining of enamel coated pipes
Assignee: Gaido-Lingle Co Inc
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Filing: 1960-09-20
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Granted: 1964-06-30
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Expires: 1980-09-20
Abstract
No abstract record available.
Inventors
- 👤 Gaido San Jacinto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:43
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L13/0254; F16L13/0272; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
THE METHOD OF JOINING TWO LENGTHS OF PIPE LINE, WHICH LENGTHS HAVE BEEN PREVIOUSLY PROVIDED WITH A CONTINUOUS AND UNIFORM PRE-COATING OF FUSIBLE CORROSIVE RESISTANT PIPE LINE ENAMEL ALONG THEIR EXTERIOR SURFACE COMPRISING THE STEPS OF: FORMING A CUT-BACK PORTION OF SAID PRE-COATING ON ONE END OF EACH OF SAID LENTHS, WHICH PORTIONS ARE SUBSTANTIALLY FREE OF SAID ENAMEL, FORMING THE PRE-COATING OF EACH OF SAID LENGTHS WITH A CONICAL BEVELED INTERFACE AT THE LIMIT OF SAID CUT-BACK PORTION, WHICH BEVELED INTERFACE HAS AN ANGLE OF LESS THAN ABOUT 35*, WELDING SAID ENDS OF SAID LENGTHS TOGETHER IN AN END TO END ABUTTING RELATIONSHIP, APPLYING A UNIFORM AND CONTINUOUS COATING OF MOLTEN, CORROSIVE RESISTANT, FUSIBLE PIPE LINE ENAMEL TO THE FULL CIRCUMFERENTIAL SURFACE OF SAID CUT-BACK PORTIONS AND FUSING SAID COATING WITH SAID BEVELED INTEFACES OF SAID PRE-COATINGS, AND ALLOWING SAID COATING TO COOL AND TO THERBY SET, WHEREBY SAID LENGTHS ARE JOINED TOGETHER IN A CONTINUOUS PIPE LINE HAVING A CONTINUOUS, CORROSIVE RESISTANT COATING OF ENAMEL THEREON.
Claim 2
Independent Claim
168 words
THE METHOD OF JOINING TWO LENGTHS OF PIPE LINE, WHICH LENGTHS HAVE BEEN PREVIOUSLY PROVIDED WITH A CONTINUOUS AND UNIFORM PRE-COATING OF FUSIBLE CORROSIVE RESISTANT PIPE LINE ENAMEL ALONG THEIR EXTERIOR SURFACE COMPRISING THE STEPS OF: FORMING A CUT-BACK PORTION OF SAID PRE-COATING ON ONE END OF EACH OF SAID LENTHS, WHICH PORTIONS ARE SUBSTANTIALLY FREE OF SAID ENAMEL, FORMING THE PRE-COATING OF EACH OF SAID LENGTHS WITH A CONICAL BEVELED INTERFACE AT THE LIMIT OF SAID CUT-BACK PORTION, WHICH BEVELED INTERFACE HAS AN ANGLE OF LESS THAN ABOUT 35*, WELDING SAID ENDS OF SAID LENGTHS TOGETHER IN AN END TO END ABUTTING RELATIONSHIP, APPLYING A UNIFORM AND CONTINUOUS COATING OF MOLTEN, CORROSIVE RESISTANT, FUSIBLE PIPE LINE ENAMEL TO THE FULL CIRCUMFERENTIAL SURFACE OF SAID CUT-BACK PORTIONS AND FUSING SAID COATING WITH SAID BEVELED INTEFACES OF SAID PRE-COATINGS, AND ALLOWING SAID COATING TO COOL AND TO THERBY SET, WHEREBY SAID LENGTHS ARE JOINED TOGETHER IN A CONTINUOUS PIPE LINE HAVING A CONTINUOUS, CORROSIVE RESISTANT COATING OF ENAMEL THEREON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |